Charleston AFB/International in July 2025

71.0%departed on time

BTS: A flight is counted as on time if it arrived less than 15 minutes after its scheduled time. Only carriers with at least 0.5 percent of domestic scheduled passenger revenue report.

In July 2025, reporting carriers scheduled 2,331 domestic departures from Charleston AFB/International (CHS). 71.0% left less than 15 minutes late and 69.8% reached their destination on time; 3.4% were cancelled.

Nationally that month, 69.7% of flights departed on time and 69.0% arrived on time, so CHS departures were 1.3 points above the national departure figure.

A year earlier, in July 2024, the airport had 2,494 departures with 69.6% leaving on time: a change of +1.4 points, with flights down 7%.

Flights arriving at CHS that month were on time 65.2% of the time (2,330 scheduled arrivals).

Of the delay minutes that carriers assigned to a BTS cause category that month, late-arriving aircraft 39%, air carrier 33% and national aviation system 23%.

On time 69.8%
Arrived 15+ minutes late 25.9%
Cancelled 3.4%
Diverted 1.0%

Every scheduled departure from CHS in July 2025, judged by arrival at the destination.

July 2025 against a year earlier, the airport's year and the nation

Measure	Jul 2025	Jul 2024	CHS, 12 months to Jul 2026	All reported flights, Jul 2025
Departed on time	71.0%	69.6%	77.8%	69.7%
Arrived on time	69.8%	67.9%	77.5%	69.0%
Cancelled	3.4%	4.7%	2.3%	2.5%
Average departure delay (late minutes only)	27.4 min	25.6 min	18.1 min	24.3 min
Scheduled departures a day	78	83	67	21,048
Scheduled departures	2,331	2,494	24,565	631,428

Airlines that month

Reporting carrier	Flights	Share	On time	Avg arrival delay	Cancelled
AA American Airlines	475	20%	69.1%	24.5 min	3.8%
DL Delta Air Lines	422	18%	78.2%	17.2 min	0.0%
WN Southwest Airlines	397	17%	72.8%	10.6 min	1.5%
YX Republic Airline	234	10%	57.3%	27.5 min	9.0%
OH PSA Airlines	215	9%	69.3%	9.1 min	7.0%
UA United Airlines	174	7%	78.2%	8.2 min	0.6%
B6 JetBlue Airways	144	6%	54.9%	32.4 min	7.6%
MQ Envoy Air	88	4%	68.2%	10.0 min	3.4%
OO SkyWest Airlines	57	2%	73.7%	13.3 min	1.8%
NK Spirit Airlines	56	2%	75.0%	19.3 min	3.6%
AS Alaska Airlines	31	1%	45.2%	23.9 min	3.2%
G4 Allegiant Air	30	1%	60.0%	62.0 min	0.0%

Busiest routes that month

Route	Cities	Flights	On time	Avg arrival delay	Cancelled
CHS–ATL	Charleston to Atlanta	282	83.3%	2.8 min	0.0%
CHS–CLT	Charleston to Charlotte	240	80.0%	17.5 min	1.7%
CHS–ORD	Charleston to Chicago	171	66.7%	7.4 min	2.9%
CHS–DCA	Charleston to Washington	150	52.7%	30.8 min	14.0%
CHS–DFW	Charleston to Dallas/Fort Worth	148	73.6%	10.0 min	2.0%
CHS–BWI	Charleston to Baltimore	117	67.5%	14.9 min	5.1%
CHS–EWR	Charleston to Newark	113	63.7%	38.8 min	8.8%
CHS–LGA	Charleston to New York	105	49.5%	78.1 min	6.7%
CHS–DTW	Charleston to Detroit	104	83.7%	2.2 min	1.0%
CHS–PHL	Charleston to Philadelphia	104	66.3%	23.2 min	3.8%
CHS–BOS	Charleston to Boston	93	57.0%	27.3 min	3.2%
CHS–MIA	Charleston to Miami	92	69.6%	20.7 min	2.2%

By scheduled departure hour

On-time share:under 62%6270768288% and over

Share of departures that left less than 15 minutes late, by scheduled hour (local time), July 2025.

Delay causes

BTS cause category	Share of delay minutes	National, Jul 2025	Minutes
Air carrier	32.6%	31.1%	19,583
Late-arriving aircraft	38.8%	40.8%	23,292
National Aviation System	23.4%	20.7%	14,042
Extreme weather	5.1%	7.3%	3,063
Security	0.1%	0.1%	32

60,012 delay minutes on 603 flights that arrived 15 or more minutes late and carried a cause report. Carriers assign the categories; see what each category means.

Questions and answers

How many flights left CHS on time in July 2025?

71.0% of 2,331 scheduled domestic departures left less than 15 minutes late, and 69.8% reached their destination on time. The national figures that month were 69.7% and 69.0%.

How does that compare with a year earlier?

In July 2024, 69.6% of 2,494 departures left on time and 4.7% were cancelled, against 71.0% and 3.4% in July 2025.

Provenance

Source: Bureau of Transportation Statistics, Reporting Carrier On-Time Performance, file for July 2025; public domain. Domestic scheduled flights by reporting carriers, totals and averages only. The site's data runs through July 2026. Full record for CHS · methodology · corrections.